Forensic analysis of architectural finishes using Fourier transform infrared and Raman spectroscopy, Part I: The resin bases

Steven Bell, L.A. Fido, S.J. Speers, W.J. Armstrong, S. Spratt

Research output: Contribution to journalArticle

27 Citations (Scopus)

Abstract

The ability of Raman spectroscopy and Fourier transform infrared (FT-IR) microscopy to discriminate between resins used for the manufacture of architectural finishes was examined in a study of 39 samples taken from a commercial resin library. Both Raman and FT-IR were able to discriminate between different types of resin and both split the samples into several groups (six for FT-IR, six for Raman), each of which gave similar, but not identical, spectra. In addition, three resins gave unique Raman spectra (four in FTIR). However, approximately half the library comprised samples that were sufficiently similar that they fell into a single large group, whether classified using FT-IR or Raman, although the remaining samples fell into much smaller groups. Further sub-division of the FT-IR groups was not possible because the experimental uncertainty was of similar magnitude to the within-group variation. In contrast, Raman spectroscopy was able to further discriminate between resins that fell within the same groups because the differences in the relative band intensities of the resins, although small, were larger than the experimental uncertainty.
Original languageEnglish
Pages (from-to)1333-1339
Number of pages7
JournalApplied Spectroscopy
Volume59
Issue number11
Publication statusPublished - Nov 2005

ASJC Scopus subject areas

  • Spectroscopy
  • Instrumentation

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